Physicist Witten thanks AI in a 33-page single-author work; Claude Opus 5.5 proposed a key mathematical construction

In a 33-page single-author preprint (arXiv 2611.05051), physicist Witten thanks Claude Opus 5.5 and states in the main text that the model proposed a key mathematical construction. The paper tackles the problem of lattice regularization of chiral fermions, which requires interpolating between the discrete lattice and the continuous gauge field while preserving gauge symmetry and holonomy matching. The article says that the variant proposed by Claude introduces, in the above interpolation, a stepwise boundary collapse under a coordinate pullback map, flattening the δ-neighborhood of the cell boundary to a constant, so that the normal derivative vanishes when solving the Dirichlet problem level by level, thereby obtaining smoothness on the gluing surface. The article also compares: in the related work in June, Claude Opus 4.8 appeared only in a footnote, while in the new version in November the wording has changed to suggested.